Granted, it's not as useful as the USB missile launcher, but this 150x microscope could come in handy around the office. It's currently available only in Japan, so you may have to content yourself with the missile launcher for now.

Microscopes are very handy to have round the house anyway. I had to replace the shoulder switch on my son's Nintendo DSl the other day - without the stereo microscope it'd have been really hard to make sure all three solderpads had connected - the switch is about a 3mm cube and was surface mounted - the solder has to go underneath.